BWF and WAV File Reader for Node.JS

A lightweight module that parses WAV or BWF information data from a wav file into a Javascript Object. Basically retrieves file and header meta data information from a WAV or BWF file.

Used for:

- Determining the validity of a .wav or .bwf file
- Detecting the bit depth / bit rate / bits per sample of a .wav or .bwf file
- Detecting the Sample Rate of a .wav or .bwf file
- Detecting the number of channels in a .wav or .bwf file
- Retrieving the file information, including file size, created date etc

Usage

``
npm install node-bwf-wav-file-reader --save


or


yarn install node-bwf-wav-file-reader
`

$3

`javascript
const { read: readBwf } = require('node-bwf-wav-file-reader');

readBwf('./__tests__/audio.bwf', function (err, info) {
if (err) console.error(err, info);
else console.log(info);
});
`

$3

`javascript
const { readSync: readSyncBwf } = require('node-bwf-wav-file-reader');

(async () => {
const info = await readSyncBwf('./__tests__/audio.bwf');
console.log(info);
})();
`

$3

`typescript
import * as bwfWavFileReader from 'node-bwf-wav-file-reader';

bwfWavFileReader.read('./__tests__/audio.bwf', function (err, info) {
if (err) console.error(err, info);
else console.log(info);
});
`

$3

`typescript
import * as bwfWavFileReader from 'node-bwf-wav-file-reader';

(async () => {
const info = await bwfWavFileReader.readSync('./__tests__/audio.bwf');

console.log(info);
})();
`

$3

`
{ duration: 27.391986111111112,
result:
{ chunkId: 'RIFF',
chunkSize: 15777784,
format: 'WAVE',
subChunkFormatId: 'fmt ',
subChunkFormatSize: 16,
audioFormat: 1,
numChannels: 2,
sampleRate: 96000,
byteRate: 576000,
blockAlign: 6,
bitsPerSample: 24,
subChunkListId: 'LIST',
subChunkListSize: 148,
subChunkInfoId: 'INFO',
subChunkInamId: 'INAM',
subChunkInamSize: 64,
subChunkInamData: 'mySession',
subChunkIsftId: 'ISFT',
subChunkIsftSize: 32,
subChunkIsftData: 'myDevice',
subChunkIartId: 'IART',
subChunkIartSize: 24,
subChunkIartData: '0000CC089DC40A2',
subChunkBextId: 'bext',
subChunkBextSize: 668,
Description: 'mySession|0000CC089DC40A24|400',
Originator: 'myDevice',
OriginatorReference: 'CNCMECC089DC40A24155730911358306',
OriginationDate: '2019-03-22',
OriginationTime: '15:57:30',
TimeReferenceLow: 3281795072,
TimeReferenceHigh: 0,
Version: 2,
UMID: '',
LoudnessValue: 0,
LoudnessRange: 0,
MaxTruePeakLevel: 0,
MaxMomentaryLoudness: 0,
MaxShortTermLoudness: 0 },
stats:
Stats {
dev: 16777220,
mode: 33188,
nlink: 1,
uid: 501,
gid: 20,
rdev: 0,
blksize: 4096,
ino: 8644128473,
size: 15777792,
blocks: 30816,
atimeMs: 1554189495295.2056,
mtimeMs: 1553863606437.2336,
ctimeMs: 1554189504022.6528,
birthtimeMs: 1553863606313.1821,
atime: 2019-04-02T07:18:15.295Z,
mtime: 2019-03-29T12:46:46.437Z,
ctime: 2019-04-02T07:18:24.023Z,
birthtime: 2019-03-29T12:46:46.313Z } }
`

Duration is in seconds. Stats comes from Node raw fs.statSync() result.

$3

if err is not null, the WAV file is valid.

`
{ error: true,
invalid_reasons:
[ 'Expected "RIFF" string at 0',
'Expected "WAVE" string at 4',
'Expected "fmt " string at 8',
'Unknwon format: 25711',
'chunk_size does not match file size' ] }
`

Command line usage

From the command line you can run:

`
node bwfr.js ./__tests__/audio.bwf
`

$3

- need to support different version of BWF to display correctly the coding history

$3

- @rackfx for his work on the Node WAV File Info

$3

- reach me :-)
- Or submit a PR

`
npm test
npm version patch
npm publish
``

$3

Martin RATINAUD FullStack Developer, creator of

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